不同处理对库尔勒香梨根系生长及果实品质研究OA

[Objective]This study aims to provide a reference basis for the high-quality cultivation and promotion of Korla fragrant pear.[Methods]Taking young and mature seedlings of Korla fragrant pear as test materials,the seedlings were trea-ted by root irrigation method to explore the effects of different plant growth regulator treatments on the branch growth,fruit appearance quality and internal quality of Korla fragrant pear.[Results]The results showed that C1,C3,C6,C9 and C14 could significantly promote the branch growth and development of young trees.Among them,C1 treatment had the most sig-nificant effect on increasing the main branch diameter of young Korla fragrant pear trees,reaching 0.54 mm;C3 and C6 treat-ments had the most obvious effect on increasing the main branch length,both being 3.40 cm;C4 and C6 treatments could com-prehensively and significantly promote the root development of young trees,and C6 had the best comprehensive performance.C9 treatment had the most significant effect on increasing the trunk diameter,reaching 0.26 cm.C11 treatment inhibited the growth of main branches of young trees.C5,C10 and C14 could significantly promote the branch growth and development of mature trees.C5 treatment significantly increased the number of short and medium branches of mature trees to 3 964;C14 treatment significantly increased the number of long branches of mature trees to 4 863.Each treatment group had no significant effect on the transverse diameter,longitudinal diameter,edible rate and fruit shape index of Korla fragrant pear.C9 treatment significantly increased the pericarp thickness to 0.06 cm.Each treatment group had no significant effect on the fruit firmness of Korla fragrant pear from 2023 to 2024.Compared with other treatments,C14 treatment significantly increased the soluble sol-ids content of Korla fragrant pear in 2023,which was the maximum value among all treatment groups(14.86° on the sunny side and 14.20° on the shady side of the fruit in 2023).C2 treatment significantly increased the soluble solids content of Korla fragrant pear in 2024,which was the maximum value among all treatment groups(14.39° on the sunny side and 14.17° on the shady side of the fruit in 2024).In addition,C14 treatment had the best effect on the single fruit weight in 2023 and 2024,which were 158.35 g and 245.03 g respectively.[Conclusion]The results of principal component analysis showed that the growth and development effect of young trees treated with C13 was the best,and the fruit quality of mature trees treated with C14 was the best.